Some people are just full of sh*t (excuse my French). I don't see anything wrong with payments personally (I know people who did it this way), but I can see your point. Yeah, I'd say pay in full or I'm selling them to someone else, since he clearly broke the contract in 1st place.
"Life isn't about waiting for the storm to pass: it's about learning to dance in the rain..."
"When we are no longer able to change a situation - we are challenged to change ourselves."
"How people treat you is their karma; how you react is yours."